---
title: MULTIPLE_SUBGRAPHS
---

import AlphaCallout from '/snippets/alpha-lg-callout.mdx';

<AlphaCallout />

You are calling subgraphs multiple times within a single LangGraph node with checkpointing enabled for each subgraph.

This is currently not allowed due to internal restrictions on how checkpoint namespacing for subgraphs works.

## Troubleshooting

The following may help resolve this error:

:::python
* If you don't need to interrupt/resume from a subgraph, pass `checkpointer=False` when compiling it like this: `.compile(checkpointer=False)`
:::

:::js
* If you don't need to interrupt/resume from a subgraph, pass `checkpointer: false` when compiling it like this: `.compile({ checkpointer: false })`
:::

* Don't imperatively call graphs multiple times in the same node, and instead use the [`Send`](/oss/langgraph/graph-api#send) API.
